Cylinder printing-press.



J. H. BARR. CYLINDER PRINTING PRESS.

APPLICATION FILED 11142.12, 1908.

- Patents; May 1 S SHEETS-SHEE yg ifiwsses J, )efiy/m J. H. BARR.

CYLINDER PRINTING PRESS.

' nrucnron rum AUG.12.1908.

Patented May 3,1910.

8 SHEETS-SHEET 2.

ii-f0? Jamal/Bar? f ki i J. n. BARR. CYLINDER PRINTING PRESS.

APPLICATION FILED AUG.12,1908.

Patented May 3, 19 1() a sums-sum a.

J. H. BARR.v

CYLINDER PRINTING PRESS.

APPLICATION TILED AUG. 12, 1908. 956,751

Patented May 3, 1910.

I Wfltnsses J aleazuge r dd/null fin/'1' J. H. BARR. CYLINDER'PRINTING PRESS.

APPLICATION FILED AUGJR, I908.

' Patented May 3, 1910.

mw 8 BH gBTB-HKZZZB.

. j Y JaluqJifiar/ J. H. BARR.

CYLINDER PRINTING PRESS.

APPLICATION FILED AUG.1Z,1908.

Patented May 3, 1910.

8 SHEETS-SHEET 6.

[lam/J01 J0/(/(/..//.a/'/' ffiwauaf J. H. BARR; CYLINDER mm'rnw: mass.

7 APPLICATION PILBD AUG. 12, 1908. 956,751 Patented May 3, 1910.

8 SHEETS-SHEET 7.

Patented May 3, 1910. I

8 SHEETS-SHEET 8.

lime/(fir JOHN H. BARR, OF KANSAS CITY. MISSOURI.

CYLINDER FRINTIl'IG-PRESS.

Specification of Letters Pat nt.-

Application filed Lugs: 12, 1908. Serial No. 448,246.

T 0. all whom, it may concern:

State of M ssouri, have invented certain Patented May 3, 1910.

I type shown or of. any other suitable or prelle it known that 1', JOHN H. Dana, a. citizen of the United States, residing at Kansas City, in the county of Jackson and I new and useful Improvements in Cylinder i Printin -lresscs, of which the following is e. spanncation.

lhis invention relates to cylinder printmg presses, anti my ObjtCt is to produce 'a machine of this character whereby stacked envelops or' sheets of paper may be automatically and reliably conveyed one by one I to the printing mechanism and there printed r and after the printmg operation be re- 5 stacked evenly and smoothly.

\Vith this general object in view, the invention consists in certain novel and peculiar features of construction and orgamzw tion as hereinafter described and claimed;

and in order that it may be fully understood reference is to he had to the accompanying drawings, in which F imire 1, is a side view of a combined printing press and paper feed machine emoodying my invention. Fig. 2, is a top Ian view of the'same. Fig. 3, is an en- Farged side view of the major portion of the upper end of the press with the inner side of the framc'omitted. Fig. 4, is a vertical longitudinal section on the line IV-IV' of Fig. 2 and-on the same scale as Fi 3. Fig. 5, is a vertical'section on the liixe V of F ig. 1 and on the same scale as Figs. 3 and 4. F in. 6. is a horizontal section on the dotted line VI of Fig. 3,. Figs. 7, 8, 9,

10 and 11 are'detail perspective views of parts of the machine. F ig. 12 is a View of a part of the opposite end of the cylinder from that shown in Figs. 1 and 3, and also shows contiguous parts in section. Fig. 13. is an enlarged verrical longitudinal section on line XIIl.-Xi1l of Fig. 1.4, with the conveyor helt omitted. Fig. 14, is a section on the line XIV-XIV of Fig. 13. Fig. 15, is a vertical section of a part of the cylinder of the .inaehine as equipped with a sheetpaper-chute. and stacking receptacle, and Fig. 16 is aili-tail horizontal section to show chiefly. a pairiol cams. Fig. 17, is a perspective view of the printed-sheet-receiving receptacle or h'ox and the means for evenly stacking tluelsheets therein In the said drawings. 1 indicates the frame of the machine the same being of the fora-ed construed-7a.

2 is transverse rack shattjournalcd in the lower part. of the frame and I, is a pair of rock-arms mounted on and near the ends of shaft and provided at their upper ends with set screws 3 to strike againzz bracket; 2') at'tilljil to the. frame and tl'ici-eizy limit. the rearward movement of said arms and to return them to their original positions, bolts 3" are secured to them and extend siidably through said brackets 3, and in": equi \Ylil) springs 3}, lx aring against the hr: and lllllh' 3" on the front ends of said bolts 3". Near their upper ends arms 3 are provided with circular openings 4, into which project. set screws 5 for centering in said openings the cyln 'li'ical journal-caps 6 receiving the ends of a transv rse shaft 7, and secured by set screws 8 or otherwise on shaft T. is a cylinder 9 equipped with part-itions 10 provided at diametrically opposite points with large openings 11 to accommodate parts hereinafter tiescrihedgthe peripheral portion of the cylinder at diametrically opposite points being divided into two simila r sections by inwardly projecting segmentshaped portions 12. which portions provide lwtm-eii said sections external troughs or.

entities extending longitudinally of the eyl intl r. and eacir section is equipped peripherally if desired. with i thin smooth c verin or t vmpan 13.

l-i i a roller parallelin; and adim-ent to the cylinder and adapted to h:- ei-piippi-il with a printing plate i6 and mounted rigidly on a shaft 16 jonr "l d in the frame. imilar roller 17 is arranged parallel will: and adjacent to {he cylinder and is mounted on a similar shaft 18 ionrnaled in the frame and equipped with a belt-wheel hereinafter referred to. to lie driven by a belt. not shown. Rollers 14 and 17 are equii 'ied at one end with gear wheels 19 and 20 l'taPtt'llYtlY \\'lll(ll mesh with the gear wheel 21 of the cylinder. the l ngth of the teeth of said gears being; such that the cylinder may more bodily toward and from -nisl rollers without tln-owin; its gear-wheels out of mesh with the gear-wheels of said l'flliifls. i

are lugs projecting from the rock arms u-niu ete l by the cross rod 23 upon --which is. pivoted a pair of rock-arms Z-t and i5 disposed at opposite ends of the cylinder.

BEISSUED The upper end of arm 24 is bifurcated at 26 and the brunch-arms formed by said bifurcation have lugs 27 projecting toward shaft 18 and ournaled between said lugs 15 an anti-friction roller 28 engaging a cam 29 arms of arm 25 are lugs -32 .corresp)cnding exactly to lugs 27, and carrying tween them an anti-friction roller 33 to engage a cam secured on shaft 18 at the opposite end of printing roller 17, can 34 be ng an exact duplicate in form and arran ement of cam 29. These cams are adapte once in each revolution, by engagement with said anti-friction rollers, to cause swing arms 24 and 25 to swing toward their carrying-arms and bearing against bracket 50 at one end and at the other against a collar 58 secured on shaft 53 for the purpose of holding yieldin ly-depressed an arm 59 also journaled on said shaft in the lane of the longitudinal center of the mac ine, a stiffer sprin being also mounted on said shaft an secure at its opposite ends to arm 59 and a collar 61, mounted on the shaft, to hold arm 59 pressed yieldingly downward upon the underlying angle-arm 62 of collar 61 rigidly secured to shaft 53. Under certain conditions hereinafter named, spring 60 will yield and ermit arm 59 to swing upwardly indepen ently of the shaft an its connections, 1t being-understood in this connection and by reference to Fig. 4 particularly, that the free end of arm 59 depends below the ilate 52 and lies close to the f the jecting from the last-named arms, resisting 3, springs 35 inter osed between arms24 and periphery o and arms 3 an mounted on pins 36 pro cylinder normally.

Referring now to the gripping mechanism which is in duplicate. for the purpose of gripping and car ing two envelops or sheets of paper around t e cylinder with eachrevsuch movement and returning arms 2; and t 25 to theirv original positions Immediately 25 after rollers 28 and 33 pass the crests or 90 .65 plained.

points of said cams. a

- Pivoted on pins 37 carried by lugs 27 and 32, are levers 38 extending through bifurcations 26 and of arms 24 and 25 respec- 30 tively, toward arms 3, and equipped at their 3."; ends adjacent to the last-named arms with wear-pIatesBQ, and at their opposite ends with set-screws 40 held by retrnctile springs 41 into peri heral engagement with cams -12 secured on s aft 18 between cams 29 and 34 and the printing roller 17 the points or crests of cams 42 being adapted once in each revolution, against the resistance of springs 41, by engagement with set-screws to rock 40 levers 38 and raise their wear-plate ends above the plane of the lugs 43 of arms 3,

for a pur ose which hereinafter appears.

44 are vers pivoted to arms 24: and 25 in the vertical plane of lugs 45 projecting 45 inward from levers 38, springs 46 connecting the lower ends of said levers with projections of arms 24 and 25, tending to hold the upper ends of levers 44 between the planes 7 o ugs 45 and arms 3. One of the levers 44 5 is provided with an arm 47- ivotally conv 55 to the frame, rearward of tie cylinder.

53 is a horizontal shaft journaled in bracket and a bracket 5% also secured to )lilil. 52, and provided at the outer side of racket 50 with a crank-arm 55 to engage the underside of hook 49, said crank-arm having an upwardly projecting sto 56 for engagement at times with the hoo and a notch 57 contiguousto the stop to receive the hook at certain tunes, asheremafter exejecting olution thereof: 63 indicates a pair of in wardly-bowed swing-arms pivoted to and within the cylinder and connected by a rod (is, the two rods of the duplicate sets of arms 63 being connected by retractile springs 65 to a semi-circular lin 66, the link being 0 such form to avoid the shaft 7. The free ends of each pair of arms 63 pro'ect outwardl into one of the tron he of t e cylinder, t e ends of the troug being recessed for such purpose, and within said trough is equip ed with a longitudinally extending bar 6'? provided at suitable points with jaws 68. Parallel with bar 67 and journaled in the free ends of swing-arms 63 is a rockshaft 69 provided with jaws 7 0 disposed o osite and adapted to clam against t e aws 68, or an envelop or s eet of 'pa r which may be interposed therebetween, t is clam ing action occurring at the moment the antiriction rollers 71 carried by and at the outer sides of the bowed arms 63, attain supported at op osite ends of the cylinder upon the inwar ly projectin hub portions 73 of swin -arms 3. Secure upon one end of each roc shaft 69 is a crank'arm 74, proin the same general direction as the jaws to and connected b alink 75 to one end of the spring 76 coi ed on rod 64 and having its opposite end engaging the adjacent bowed arm 63, the ten ency of said s ring being to exert a siiaft tending to hol its aws clamped a ainst the jaws 68 or an envelop or sheet 0% pror therebetween. At times the ]8.WS

means hereinafter described, fro jaws 68 against the resistance of spring 7 and after the central point in such opening movement ressure on the rockthe rock-shaft are swung back by posite side of the shaftv is a book 79 which is disposed inwardly of the shaft and for- \\'ti t]l of the same with respect to the direetion of rotation of the cylinder, preliminary to the opening movement of the jaws 70. it being understood that the cylinder rotates in the direction indicated by the arrow, Fig. 4. In such rotation the hook engages a stationary pin projecting inwardly from the cont guous side'of the frame, said frame being provided with a slot 81 to permil of such adjustment of said pin as to accommodate em'elops or sheets of paper of varying lengths. As the hook 79 of each rock-shaft. 9- engages said p'i'n, which..:-as. will be understood by reference to Fig. 4, is nearer the axis of the cylinder than the rock shaft, it first overcomes the resistance of springs 65 and causes the connected arms 63 to swing outward slightly. The resistance of the stronger spring 76 is then overcome and as a result the rock-shaft 69 is turned about a half revolution and thus widely opens or distends the tv'o sets of clamping jaws, the retractile tendency of spring 76 accelerating the latter half of such opening movement. Immediately after the rockshaft is thus turned a half revolution with the result described, the jaws of said shaft emerge from under the front end of the plate and at the same time the outermost end of the longer branch 77 of the bifurcated arm just previously turned by pin 80, comes into engagement with a second rigid pin 8:?

projecting inwardly from the adjacent side of the frame, which pin is disposed a distance from the center of thecylinder slightly greater than the rock shaft and as a result reverses the operation of the latter until it has again passed'the center, when the spring 76 completes such reverse operation and causes the jaws of the rock-shaft to snap toward the jaws of the cross-bar as the latter emerges from under plate 5'2, clamping action of the jaws as hereinbefore stated occurring as the rollers 71 ride over the crests of the cams 72. Immediately after the jaws are reclosed said rollers ride down t n upon the cams and permit springs 65 to a ain swingarms 63 inwardly to substantially the position shown in Fig. 4.

Journaled in bosses 83 cast with the sides this i l l l t l of the frame, is a shaft 84 equipped with a pair of: pulleys-85 connected bybelts 86,

with a pair of pulleys 57 mounted on a similar shaft journalcd in similar bosses $9 on the frame, these belts being so ai'rangi d as to frictionally engage an envelop or sheet of paper lying upon plate 32 and move it forwardly thereon until arrested by certain devices hereinafter described.

is a belt wheel mounted on the shaft 88, between pulleys ST and connected by a belt 91 with a pulley J2 suitably jonrnaled in a yoke 93 pivoted on shaft said yoke being equipped with an angle-arm O1 resting and supported on an arm 95 projecting rearwardly from the upper end of a crank-t rni 9t; jouriialed on a shaft 97 journaled in the sides of the frame, and provided near each end with gear pinions J8 engaging vertical rack-bars 9"! connected at their upper ends by an arch 100 and at their lower ends by a horizontal frame 101 equipped with a re-' movable bethplate 102 adapted to carry a stack of envelops or sheets of paper to be printed. a stack of the former being shown envelops or sheets 01 paper to be printed are stacked, as hereinafter more particularly referred to,'tlie lower end of said plate being secured to a lag or extension 10.) of a substantially U-shaped frame 106 secured to vertical ribs 107 of frame 1. The plate 104 terminates below the plane of belt 91 and is equipped near its upper end and at opposite sides of its vertical center with a pair of brackets 108 secured at their opposite ends to a tie-rod 109 connecting the sides of the frame 1. Plate 10-1 is provided with horizontal slots 110 through which adjustable clamping-screws 111 extend into brackets 1'12 rigid with a pair of vertical guide plates 113, these plates 113 being adapted to be brought in such relation as to admit snugly between. them the stack of envelop's 103 o a stack of letter paper, not, shown,- it being understood that where sheets are to be printed a-larger bed, not shown, but corresponding in other respects to bed 102 will be em; ployed.

For the purpose of automatically elevat i ing the envelop or sheetof paper feed-bed to accommodate the diminishing size of the stack as the. envelops or sheets of paper are moved successively forward. therefrom by the belt 91, and thus facilitate the delivery of such envelops or sheets in rapid succession to .the printing mechanism, shaft 97 is equipped wit a ratchet-wheel lltadaptcd to be-internii tently operated by the pawl 115 pivoted to the prolongation 31 of arm 25, and reciprocate-d by the rocking action hereinbefore mentioned. of said arm 23. The pawl 11:) has a lug 116 to which is adjustably secured a link 11? pivoted at its u pe'r end to a rock-arm 118 rigid with ha upwardly re ecting rock-arm 96 hereinbefore descri ed, the arrangement being such that when the belt 91 is resting on the top of the stack 103, the arm 91 is above and out of contact with arm 95 projecting from arm 96. As a result.- the weight of the yoke 93 which as hereinbefore described is pivoted on shaft 88, is not im osed on arm 95, and theipawl is permitte to gravitate wholly below ratchet-wheel 11-1' and consequently does not affect such ratchet. As the belt 91 successively removes the topmost envelop or sheet of pa er from the stack, it is gradually depresse y the gravitative action of the pivoted yoke and thus im oses the weighton shaft 88, is not im ose on arm 95, and depresses the same. T iis depression through the connections described, raises the free end of the pawl and causes the same on its next rearward movement, to engage and turn the ratchet-wheel 114 and, through pinions 98 and rack bar 99, raise the frame 101 and the stack of envelops or sheets of paper carried thereby, and to prevent lateral swinging movement of the pawl, it extends through the'hook-shaped lower end of a guide 119, depending from plate 52. To further insure the elevation of the stack in response o a very slight downward movement of the yoke and feed-belt 91, the guide 119 is provided with a wedge-arm 120 disposed toward the cylinder, and an arm 121 is secured on pawl 115, the said arm 121 in the inoperative reciproeation of the pawl playing back and forth under wedge 120. \Vherrtbe awl is raised however, as explained, even if the elevation does not bring arm 121 clear above the wedge, the former will strike and ride upwardly on the wedge which thus insures a sufficient elevation of the pawl to cause it to engage and operate the ratchetwheel and hence perform the function explained. For the purpose of holding the envelop or paper-carying frame in the po sition to which it is adjusted by the pawland ratchet-mechanism, as herembefore explained, a sprin -actuated pawl 122 is pivotally supported from and below plate 52. and engages the ratchet-wheel 114, said pawl 122 being provided with a handle 123 projecting up through an opening in plate 52 to enable the person in control to trip pawl 122 from engagement with the ratchet, to permit the envelop or papercarrying frame to descend to its initial position to receive a new charge of envelops or sheets of pa ier.

124 indicates an angle-bar extending transversely of plate 52 and equipped at each end with a (pair of adjusting screws 125 resting upon sai plate, and near said screws and occupying a plane between them are screws 126 which extend down through said plate, the arrangement being such that, by screwing the front pair of screws 125 downward. and the rear pair upward or vice versz the bar can be tilted downwardlyano rearwardlv or downwardly and forwardly, respectively, for a par ose which hereinafter appears, the anglear tilting on screws 126 as the fulcrum for such movements.

127 indicates a air of bars arranged longitudinally of ant restin on plate 52 and provided with vertical y-slotted anglebrackets 1'28 bearing against the rear side of angle-bar 12 1. Bolts 129 extend through the longitudinal slot- 1'21 of angle bar 124 and also through the slots of angle-brackets 128, and are engaged by clamping nuts 131 for the purpose of clamping said angle-bar and hence the bars 1'27 the proper distance apart to accommodate envelops and sheets of paper of varying widths, the vertical slots of the brackets being to permit bar 124 to be tilted as explained Without affecting the position of bars 127. The bars 1.27 project beyond the rear edge of plate 52 and rave notches 132 in the inner sides of said projecting ends to snugly receive the front edges of guide 113, as shown most clearly in Fig. 10. Bars 1'27 are formed in the vertical planes of plates 113 with upwardly projecting guide walls 133 which toward their front ends, are preferably inclined inwardly to restrain the sheets of paper or envelops adapted to successivel travel forward between them, from buck ing or bendin upward at their edges, and said bars are also provided with horizontal flanges 134 projecting in'wardly from the lower margins of walls 133 and lying flatly on plate 52.

the front edge of plate 5:? and depend below the same for the purpose of reventin the forwardly disposed edges of t 1e stacked envelops or sheets of paper from catching on the front edge of the late instead of passing freely upward r ovc the same.

Secured adjnstably in the longitudinal slot 136 in plate 52 centrally between conveyer belts 86 and below transverse angle bar 124 which bridges the lower strands of said belts, is a round-headed bolt, 137, the head of said bolt being disposed at the upper side of plate 52 and in the path of each envelop or sheet of paper so .as to compel the same to buckle upward slightly in the plane of its longitudinal center, for :1 urpose which hereinafter appears,- am to "sharply deline this bucklin action I provide a pivoted U-shaped gu'ic e 138, having a sleeve portion 139, pivoted to one endof the shaft of belt wheel 92, and arranged with its arms at op )osite sides of the lower strand of belt t l'and converging downwardly and forwardly toward and resting at their free ends on plate '3 at opposite sides of the upward projection of said plate constitutet'l by the head of bolt 1'37.

Secured to and depending from plate 52 at opposite sides of the plane of bolt 137, is a pair of bearings .110, (Figs. 3, 4 and G.) for a lranr-yerse shaft Ml forming a support outward f said bearings for a plate H2, projecting heron-l the front edge of plate 32 and terminating at its frceend at pposite sides of a notch 143 therein. in upwardly projecting ilan s 1 11 of sullieient length to normally pro above the plane of plate 3'2 under the pressure of a spring 144*. socured to a collar 114. on the rod 109. and re ting upon said plate 142 is the crank 115 of a transverse rock-shaft 11G, journaled in imn'in s 147 secured to and depending from plate the said rock-shaft at its opposite M. outer end. being equipped with a down- "r-ll c- -r jwrtlug craIdi-arm 14:8 to be ong': d and rocked backward twice in each rt-iolutir-n ol' 'the cylinder 5). bv a pair of can't-lugs HSseeured to the c .'linder as shown at 150.

lid is a plate (sec Figs. 13 and 11) overlying the lower arm of angle-har 121 and formed with a depending flange. 151 resting on said lower arm and with a series of tingers Fri-ii, converging with respect to plate and ucjecti-ug beyond the front end of the rilillfi to about the plane of the inner sides of flanges 144 of the plate H2, it being noted conm-ction that the fingers 132 are di posed at such a slight angle with respect to plate that they will hold an currrlop or she-e: of paper flatly down upon said plate and thus guard against the former buckling or tl ll )ll!lg under the frictional pressure imposed upon it by the toriardly moving low-2r strands of bells 86. v The lingerequipped. plate 151 fitted upon a pair of upwardly projecting stud-bolts 151 and engaging said stud-bolts and rest ng upon said plate 151 are. nuts 1:31, said nuts being utilized to vary the pressure of the front ends of the fingers upon the front end-of plate 52. Said nuts also extend through a plate. 153 overlying plate 151, washers 151 fitting on said nuts between said plates 151 and 153. the last-named plate being prevented, by said stud-bolts extending through them, from moving laterally or longitudinally though it is capable of a slight vertical play.

-1 :31 is an angle bracket secured to angle. bar 12-1 centrally of the latter and depending from the front end of bracket 154 is astudbolt 155 provided with a out 156 and with an expansion 5 ring 157 hearing at its upper and lower cm 5 against said nut 156 and plate 153, said plate being equipped with forwardly projecting fingers 158 overlying fingers and terminating at their ront ends in down-turned ends 159normally engaging the upper ends of flanges 144 of the plate 112. hereinafter termed the. detainer. Fingers and 138 are also hereinafter terumdthe low-aand upper retainers.

160 indicates an adjustable wedge mounted on plate and projecting beyond the front edge of the same and adapted to be engaged by the crank arm 101, Fig. l, of gripper shaft. (351 to prevent the movable gripper jaws from clamping the envelop or sheet. of paper down upon the stationary gripper jaws until its frontend has reached dotainer flanges 141 and thus insure that all of the envelops or sheets of paper shall receive impression from the printing plate at corresponding distances from their front edges. it being further noted in this connection that the upper retainers 138 are designed to hold the envelops or sheets of papp against movement by bolts 86- in the event t" at the detainei' 142 is depressed before the envelop or paper has reached its flanges 144:.

161 is a circular flange projecting from the cylinder and provided at diametrically opposite points with notches 161 and at other diametrically opposite points with notches 161, and 161 are lips projecting outwardly and forwardly from the rear edges of notches 161", with respect to the direction of rotation of the cylinder.

161 is an angle-arr." projecting from arm 47 and normally engaging the inner side of the circular flange, the parts being so arranged that one of the notches 161 shall pass arm 161 before the. rear end of an envelop or sheet of paper is drawn @forwardly, as hereinafter explained, oil the plate 52.

As a gripping mechanism emerges from below the plate 52. one of the jaws 70 of its rock-shaft as the latter is being turned to perform its clamping function; engages and presses arm 5!) upward out of the path of the envelop or sheet of paper and then with the companion jaws clamps said envelop or sheet down upon the companion jaws (58 of the bar (37, and draws such envelop or sheet forward, the retainers yieldin upward slightly under such movement 0 the envelop or sheet. The up ard movement of arm 59 causes rock-shaft- 53 to turn because spring 60 is of greater stren h than sprin 58, the

arm 55 rearwardly under hook 49, at this time held elevated against the resistance of springs 16, by the flange 161 underlying angle arm 161 of 'arm 17. It will thus be seen that, as the envelop or sheet of paper is being drawn forward, itwill sustain the comparatively light pressure of 'sprin 58, because the flange 161' u )holds hooi 49 through the engagement 0 hook 161 with the underlying flan e 161, the pressure of spring 58 being so light that the arm makes no crease or mark on the supporting envelop or sheet. In the rotation of the cylinder hook 161' can not pass downward through the notch'161" which first passes it because at suchtirne the arm 55 sustains the downward pressure of book 49 induced by springs 46, and thus relieves the envelop or sheet of such duty. As the continued rotation of the ylinder disposes one of the notches 161 below the hook 161', the latter cannot pass down through such notch because the under- 10 that one of the notches 161 passes under and beyond hook 161 before the rear end of the envelop or sheet being conveyed forward by the grippng mechanism, clears the front with the gear wheels 19 and 20 to avoid any interruption in the rotative movement of the cylinder. The cams 42 effect the rci levation of lovers 38 immediately the rear end of the envelop or sheet of paper passes the printing plate of roller 14 but said levers are immediately redepressed at their rear ends because levers 44 are held out of the plane of movement of lugs 45 through the continued depression of angle-arm 161" by that )ortion of flange 161 between the note 161 through which said arm dropped and the notch 161 at the opposite of the cylinder. Because of this arrangement the rinting end of plate 52 so that after such envelop or 15 sheet does clear the front end of said plate and thus permits spring 58 to effect the depression of arm 59 and the forward movement of arm 55 until the stop 56 strikes the side of the hook, the said flan e 161 retains the hook in its elevated osition over slot 57 against the resistance of springs 46, which of course tend to pull said hook downward.

plates rotate out of operative relation with go the cylinder before the latter is swung back toward the printing roller which action occurs by the engagement of the lip 16]. of the notch 161 last referred to, engaging the inwardly projecting portion of the angle arm 161', and raising the same through said opening to the inner side of the flange, the

50 through it.

thus maintaining the hook elevated w ich is the case as long as envelops or sheets are taken in regular order from plate 52 to the cylinder the levers 44 are maintained under lugs 45 of levers 38 and the latter are maintained with their rear ends above lugs 43, in which position they are free to be reciprocated by thecams 29 and 34 without moving arms 3 and consequently without affecting the position of the cylinder. When no sheet of paper or envelop is passing through the machine or in the event 35 that an envelop or sheet fails to reach the detainer flanges at the propertime, the arm o9 aftcr being raised by the gr pping mechamsm, as herelnbefore explained, drops imfmediately back to its original position and "#0 thus disposes notch 57 under hook 49 so that as the cylinder rotates and before the print- 1 plates attain operative positions with ii I I v rel at on thereto, the springs 46 will cause angle arm 161 to drop down through the first notch 161 encountered, it being noted in this connection that the notch 161 which passes arm 161 before the said notch 161 attains a position below said arm, is so narrow that arm 161* has no time to drop As the arm 161 drops through the notch 161", the hook -19 descends into notch 57 provided to accommodate such movement of the hook, and atthe same time levers -14 are swung rcarwurdly from under lugs 45 of levers 354 to permit the springs 41 of the latter to rock their rear ends downward lnto the honxoutal plane of lugs 43. As a result the next rearward movement iniparted to lJH'lrI 118 by cams 29 and 34. is ll'tlll'ill'llilttl to swing arms 3 for the purpose of swinging the cylinder hodib, rearward a f sullicicnt distance to prevent miuaet hetw con i it and the printing platcs, it being noted in this connection that such inoven'ient is so? slight that the gear wheel 21 remains in mesh i hook 49 being incidentally raised above the plane of the notch 57 and the levers 44 being restored to their original positions below lugs 45 of levers 38. It will thus be seen that it is impossible for the cylinder to become (le faced through contact with the printing plates.

It will be observed by reference particularly to Fig. 3, that when a gri per mechanism is passing the front end 0 plate 52, the lip 161 at the o posite side of the cylinder has still'some (istance to travel before it reaches the vertical plane of arm 161 and that at such time the cams 2.4: and 39 are about ready to start levers 30 on the rearward part of their reci rocatory movement. Assuming that the said gripper mechanism fails to pick up the envelop or sheet on date 5:? but that the other grip er mechanism is carrying its envelop or sleet, it. will be seen thatthe depression of arm 69 immediately following its elevation by the first-named gripper mechanism, is not followed by the drop of the hook 49 into notch 57 because flange 161 will not ermit arm .161 to (ll'O) until it is reached opening 1G1 by which time the tail-end of the envelop or sheetearried by :the other gripion of roller 17 and received the impression of i said plate. It will thus be seen that the circular flange is utilized to hold levers 44 under lugs 45 as long as possible to revent the throw-olt of the cylinder until t e said envelop or lltill of paper has passed the second printin plate and that without utilizing said flange as described, or some other mechanism for accomplishing the same pllll'fllrk. the throw-off would occur before the said sheet or envelop had re ceived the impression from the second printin plate, which in practice is desi ned for a different colhr from printing with ink o that used in connection with the printing plate of roller 14. After the depression of arm 13'' occurs-and the throw oil action has also occurred, it will be understood that. hook 19 is occupying the lower part of notch 57 and is locked iii such position because flange 161* is holding arm 161 depressed. \Vith the parts as thus arranged, it. will be seen that the next. time arm 59 is raised by the gripper ineehanian. spring (30 must yield because the shaft is locked through the engagement of hook -19 with notch 57, and as soon as said grip )er mechanism releases said arm 59, it wil be repres ed by said spring (30, which is employed simply to permitarm 59 to be raised by the grippcrs when the machine is running empty and therefore when arm 163 is held dc envelops or sheets of paper get betweenpressed for the greater part of the time by flange 1G1".

To guard against the rear end of the envelop or sheet of pa er" as it is drawn forward from under be ts 86 by the gripning mechanism from. swinging forward and thus possibly becoming efaced by the printingplate of roller 14, a guard 162 is secured to the. transverse tie-bar 1 2, connecting the sides of the frame between roller 14 and the cylinder.

To guard against any possibility of the feeding mechanism becoming choked by the entrance into the feed-way of a numberof enrelops or sheets of paper simultaneously, I )roride the following construction :--l63 indicates a pair of plates secured to and depending from late 52 and forming a journal for the shaft 164 extending parallel with the feed belts and at one side of the same, and provided at its rear end with a transversely extending crank-arm 165 equipped with an angular separating device 166 projecting through an 0 )ening- 167 in late 101, the rear arm of sai separating evice extending transversely of said opening 167 and being of substantially rightangle triangular form with its hypotenuse face pitched upwardly and rearwardly for the purpose of compelling each envelop or sheet of paper as it asses such device to slide rearwardly slig tly in order to attain a position at the upper side of the said arm. J ournaled on the crank arm 165 of shaft 164 is a rubber faced or equivalent faced feedroller 168 disposed in the longitudinal ceu-I terof plate 52, and projectin upwardlv through the same and forwardly through opening 167 of plate 104 and held by a torsion spring 169 mounted on arm 16."), against tie hub-portion of said separating device against free rotation, said spring permitting said roller to turn when a sin 1e envelop or sheet of paper is clamped etween it and the overlaying feed belt 91, but offering a resistance in the event that two 'said roller and the feed belt, greater than l or in excess of the friction between the said ing feed-roller against. the belt 91 or any envelop or sheet of paper interposed between the roller and said belt.

Rearwa-rdof roller 168 is a second feedretarding mechanism, the same being (3011- structed as follows: 172 and 173 are plates hingeddo. shaft 111 and projecting rear wardly and forwardly therefrom respcc-- tivcly, and held pressed yieldingly upward at their free ends .by means of a torsion spring 174 mounted on shaft 141 and having each of its ends underlying oneof said hingedplates. Journaled in the free end of plate 172 is a transverse shaft 175 equipped at each end with aruhher faced or equivalent faced roller 176 pressed upwardly through. plate 52, against feed belts 86' except when an envcl p or sheet of paper is inter osed between them. Shaft 175 is equippe with a. rigid collar 157 and with a spring 178 hearing at one end against the plate 172 and at the other pressing said collar against said plate in order to guard against. free. rotation of said rollers. 17) indicates a transverse shaft journaled inthe free end of plate 173 and equipped at itsend in line with rollers 176 with rubber-faced equivalent faced rollers 180. The said shaft is also provided with a rigid collar I81 and with a spring 182 hearing at one end against the plate 173 and at its opposite end against collar 181 to hold the same also against said plate and thus prevent free totation of rollers 180, it

' distributing plates 18.), above and below bar 183, the upper. one only appearing, and extending transversely across each plate 185 is a pair of ink-distributing rolls 186, jcurnaled in bearing-frames 187 connected pivotally by links 188 with the upper. end of a air of arms 189, provided with forwardly ent goose-neck portions 190 for a purpose i lug-bolts 193 extending through arms 159 198 extends downward through a bracket which hereinafter appears. Arms 189 are pivoted at 131 to upright arms 192, clampand slots 19% in arms 192, topermit of a slight pivotal adjustment of said arms 189. The arms 192 are secured to the upwardly projecting crank arms 195 of a rock-shaft 196 journaled in the lower portion of the frame and provided also with a rearwardly projecting rock-arm 197 from which the rod 199 projecting from said frame (see full lines Fig. 2 and dotted lines Fig. 1). A not 200 is secured on the lower end of said rod and an expansive spring 201 is mounted on said rod and bears at Its upper and lower ends against said bracket 199 and not 260 to hold the rock-arm 197 yieldingly depresEed. 202 is a bar pivotally connected to the rear end of the rock-arm 197 and pro-- vided with a slot 203 and equipped with a laterally projecting top-plate 204. A shaft 205, is journaled in bearings 206 of the frame and is equipped with a crank arm 207, carrying a roller 208, underlying and adapted once in each revolution of the shaft to engage plate 204, and raise bar 202 against the resistance of spring 201, for the purpose of rocking shaft 196 and thereby causing rolls 186 to roll across plates 185 .to distribute the ink-thereon, one of each set of said rolls 186 thus engaging and supplying ink uniformly to a roll 209 journaled in suitable bearings carried by rearwardly proecting arms 210 secured to or cast with cross or 183. The rolls 209 in turn transfer ink to rolls 211 also suitably journaled in bearings carried by arms 210 and adapted to supply ink to the printing plates of printing roll 1-l and 17, the rollers 211 being equipped with gear-wheels 212 meshing respectively with gear wheels 19 and 20 of printing rollers 11 and 17; To efi'ect a thorough and uniform distribution of the ink on rolls 211, the shafts 213 of rolls 209 are capable of rcciprocatory action in their bearings and at one end are prolonged and pivotally connected to rock-levers 214 secured on a vertical shaft 215 carried by the frame, the opposite ends of said rock-levers 3 having pins 216 engaging the cam-grooved; collar 21S mounted on shaft 205. Mounted on the opposite end of shaft 205 is a gear 5 wheel :31!) ineshingpvith and adapted to be driven by gear teeth 920 of shaft 18,

referred to. Pirotally connected to a \\'l'l:t K pin or gear wheel 21%. is a link 222, pivoted at its opposite end for movement in a vertical plane. to the link 22 pivoted ior movei went in a horizontal plane to a floating link rigidly rccnrcd to a lever ionrnal d downwardly and rearwardly inclined supp rt 243 carried by the frame, the upwardly on shaft lhl and equipped with a spring actuated pawl, no: shown, eizgaglng a side of the frame.

I equ pped with belt wheel 221 hereinbefore l order that the rocking movement imparted to lever 225 may impart an intermittent rotary. movement to the inking plates 185, for a more tllorouglr'hnd equabie distribution of ink deposited upon said plate by inking mechanism. not shown, because of any suitable or preferred type.

226 is a gear-wheel meshing with gearwhcel 21 of the cylinder 9 and journaled on a stub-shaft 227secured to the contiguous 228 is a grooved beitwheel rotatable with said gear wheel 226 and connected by a 'belt 229 with a beltpulley 230 secured on shaft 84. 231 is a grooved gaideulley engaging said belt between wheels 2 S and 230 to tension it, said guide and tension pulley being journaled on the cranked inner end of a stud-bolt 232 sered by clamin" nuts 233 to the contiguous side of the frame, the connections described transmitting movement from the cylinder to the feed-belts 86 and hence to feedbelts 91.

234 is a grooved belt-wheel rotatable with belt-wheel 228 and connected by a belt 235 to a similar belt-wheel 236 of a transverse shaft 237 journaled in the frame, said shaft being equipped with a plurality of rotary kickers, consisting of small hubs 238 provided with outwardly projecting and prefrably slightly curved arms 239 having their operative or convex faces covered by rubber or equivalent strips 2 .0, to avloid injury to the envelops as the latter after being printed, are stacked, as hereinafter explained.

241 indicates a guide-chute arranged vertically below the rear portion of the cylinder and tapering downward and terminating in the verticalplane of the kickeF-arins when the latter. are projecting rearwardly, the front wall of the chute being pitched downwardly and rearwardly, by preference, to impart the taper to the chute, the side walls -being disposed apart a distance exceeding thewidth of the envelops, it being further noted that the upper edges of the side walls extend substantially concentrically of the cylinder and with the real-wall, terminate in a plane a little below the axis of the cylinder, so that when hook 79 of one of the gripper mechanisms engages and is operated by pin 80 to move the movable clamping jaws 70 from engagement with the jaws $8 of bar 67, the printed envelop will be released by said jaws shortly after its lower or free end passes over the front wall of the chute and enters the latter, which envelop drops down through the chute and is direct ed by the same into the nth of movement of the kicker arms, whic force it outward until and after it drops upon the bottom of the angular receptacle 242 resting upon the ratchet wheel, not shown, on said shaft, in projecting arm of said receptacle forming a 13o low the lane of the kicker-shaft and are also extend rearward to a plane beyond that described by the outer ends of the kicker arms in order that the lasttwo or three. en-

' velops stacked shall be between said sitle-cx- -tonsions 24-4, after the kicker arms have passed out oi engagement with them. The kicker arms as the stack of envelops in re ceptacle 242-. is rapidly enlarged, exerts a direct rearward pressure upon i to cause said receptacle to slide di ectly rearward upon its support 243, and in order to guard -2 against. twisting movement of said receptacle a sleeve 245 is secured to the uprightportion of the receptacle and disposed outward of one side of the same and fits slidiugly on the inverted-U-shaped guide rod '25 52st carried by the support A 247 is a cross bar connecting flanges 107 of the frame above the kickers, and secured to said bar is a pair of upwardly projecting bars 948 having pin and slot connections 249 with the cros bar 250 in order that the latter may be vertically adjusted slightly to permit the downwardly disposed hook 251 of the front wall of the chute to be easily slipped over the bar and be supported thereby, the

latter being then adjusted vertically through the pin and slot connections to raise the chute until it is almost in contact with the cylinder.

-252 indicates a series of bars secured to 40 and extending downward from bar 2-1:? rearward of the kicker-shaft- 23] and between the kickers thereof toguard against any possibility of the envelops being carried around and forwardly under the kickershaft by the kicker arms, said arms in approximately the horizontal plane of said shaft, being bent to form downwardly and rearwardly extending shoulders 253. to positively deflect the lower edges of thecnvclops rearwardly off said arms and toward the upwardly projecting backing arm of the receptacle.

Referring now to Fig.1"), which shows a .printed sheet receiving receptacle. and a chute to deliver such sheets the eto after rcleased from the cylinder in'tlic same manner as described with regard to the delivery of the printed envelops; indicates the chute adapted to be suitably supported in substantially the sameposition and by the 'isame means as the envelop chute; which of course is removed to accommodate the sheetpaper chute. the latter apering toward its lower or delivery end and also curving rear- 5 wardly so as to cause the paper to travel mainly in a horizontal direction as distinguished from the {substantially vertical movement of the cnvelops, and in order to guard against. adhesion and possible buc- [cling of each sheet 01' paper in the chute 25' the latter is provided centrally with a springrod 235 attached at its upper and to the upper end of the-rear wall of the chute and extending downwardly in the latter and divergently with rcspectto said rea r wall to about the plane which the iowcr edge of the sheet will occupy as it released from the cylinder, the forward swing imparted to the sheet by the movement of the cylinder and by its own resiliency as it swings past and 39 over the upper edge of the front wall of the chute causing it as it -="ikcs said spring to bend or buckle forward over the lotion-this bendiin or buckling stifiening it so that as released by the cylinder, it will travel ver- 5 'tically downward without any tendency to adhere to the rear wall of the chute might occur if it was brought flatly against the same. As it drops down into the chute it. straiglitens out and as it strikes the rod 256 secured centrally in the chute to the lower portion of the front wall thereof, it bonds or creases in the opposite direction or reversely,

so that it cannot engage forits full'width and possibly adhere to the underlying por- 5 tion of the front wall, this reverse bend or crease imparted to itby said rod 256 causing it to emerge from the lower end of the chute and travclin a substantially straight line and not bend or float upward as soon as 0 it emerges as would be the case if not so creased or buckled. Immediately after it eme ges itstrikes the downwardly a2 i rearwardly sloping guide rod 253 see 7"61 to one edge of the top of the receptacle orbox 259, the upper portion of said no; or receptacle beyond said edge oi. its top being open so that in conjunction with the opening 260 formed at the adjacent rear corner of the box. the sheets may be more readily grasped and removed therefrom. it being understood that they will be is! naked one upon the other.

To stack the sheets ev-:nl v I provide the following construction :--i'. 1 is a rod mounted in guides 262 carried by the completely closed side wall of the box. 261% a horizontal arm projecting from the rear end of said rod into the box through a slot 264 in said side wall. -l\t its opposite end the arm is bent rearwardly at 265 and downwardly to form the depending arm to move back and'forth endwise of the box into and out oi a. vertical groove 261' in therear end wall and thus be constantly tapping against the rear edges of the stack of sheets of pa per therein to compel said edges to lie flush with each other. A spring 268 is nmuntedon rod 261 and bears at its opposite ends against one of the guides 262 and the collar. 269 on the rod for the purpose of holding 13o jorce said rod and consequently said arm rearwardly at suitable ntervals said rodis provided with 9. depending arm .470 in the path of a rotary cam wheel 271 mounted on the kicker-sha t, said cam wheel being grooved to receive said aria 2&0 and assist in preventing rotative motement of the reciproeatory rod.

In general the operation oi the machine is as follows-The stack of envelops 0r sheets of paper as the case may be, upon the vertically movable bed is ca: .ied upward thereby through the action of mechanism de cribed, until engaged by the superposed feed-belt 91, the envelops or sheets before coming intoengagement with the feed-belt being forced'by the separating device 166 rearvcardly a sediment distance to break the adhesive tendency which two envelops or sheets naturally have after being pressed. flatly together. As the topm st one is carried forward by belt 91, it frictionally engages roller 16S and is compelled by fork arms 13S and belts 8G to pass under angle bar 12- the guide walls 133 tending to maintain the envelo or sheet of paper against lateral or twisting movement. As each envelop or sheet is conveyed past the projection of plate 52, it is bent or buckled upward at its center as hereinbefore expained, the said projection being so disposed that when the front bend of such envelop or sheet has reached detainer flanges 144, its rear end is still overlying and buckled or arched by said projection so as to occupy so much of the path that the following envelop or sheet will strike such buckled or arched rear end and be thereby.

prevented from overlapping the buckled envelop or sheet, it being understood that; the friction rollers 176 and 180 codperate with the belts in eficct'ing the feed of the en\elops or sheets. In the event thattwo envelops or sheets of pafper et between the belts and one or two 0 sait rollers at the same time, the latter act as retarders, that is to say, they cease to rotate because they otl'er a greater resistance to the progress of the envelop or sheet engaging them than such fenvelop or sheet of aper offers to the super iosed envelo or s eet engaged frictional y by the be t 91 or belts 86. It will thus be seen that at four points in the progre-s of the envelops or sheets there are provided means for arding against the passage to the cylin er of more than one envelop or sheet at a time, said means being the devices enumerated the late is provided with the projection herein fore described,

tion to the further advance of the following envelop or sheet. Should two or more enveleps, from anv cause, succeed in reaching the front end of plate 52 and be engaged at such end and drawn forward by one of the gri wing mechanisms the spring G0 will yie sulliciently to permit arm 59 to swing upward slightly to accommodate the passage below it of two or more envelops or sheets simultaneously without injury thereto. It

will be understood the parts are so timed and proportioned with respect to each other, thatwhen one envelop or sheet is being printed the preceding one is delivered into the chute by the operation of the gripping mechanism b pin 80, such pin as hereinbefore explained effecting the opening of the gripping jaws, the second pin 8:2 reclosing said jaws upon the envelop or sheet. of paper on plate at about the same instant that the detaincr is depressed, as hereinbeforc explained. After the envelops or sheets of paper are dropped into chute 241 or 254, respectively they are stacked as hereinbefore described.

From the above description it. will be apparent that I have produced a printing press possessing the features of advantage enumerated as desirable and I wish it to be understood that. I do not desire to be restricted to the exact details of construction shown.

and described as obvious modifications will suggestthemselves to one skilled in the art. aving thus described the invention what I claim as new and desire to secure by Lebters Patent, is:--.-

1. In a printing press, a printing-platecarryin roller suitably driven, art-impression cy indeiheld yieldingly toward said plate and geared to said roller, a gripper mechanism carried by the cylinder and consisting of jaws bearing a hinged relation,

an envelop or aper-sheet-supporting plate contiguous to t e cylinder, means to open said ews as the cylinder revolves, means to project the ipper mechanism beyond the periphery o the plate as it passes t e latter, and means to close said jaws as such passage is made and cause them to pick up the sheet of paper or envelop and draw it from said late.

2. In a printing press, a printing-platecarrying roller, suitablv driven, an impression cylinder held yieldingly toward said plate and geared to said role mechanism carried by-the cylinder and consisting of jaws bearing a hinged relati0n, an envelop or paper-sheet supporting plate contiguous to the cylinder, .means to open the separating device 166, the roller 168, and said aws as the cylinder revolves, means the rollers 175 and 180, and in addition to j 1 the periphery 9t latter, an arm intercepting the path of forto project the gripper mechanism beyond tie plate as it passes the "fut-causing the envelop in en agement with i ward movement of a sheet of paper or enthe retainer flanges 144, to oter an obstruc- 1 velop upon said plate, and means as the r, a gripper I gripper niechanisu'i passes said plate to close the jaws and cause them in such closing movement to first mo e. said inun'ccptiir; arm out of the path of said envelop or sheet of paper and then close upon and draw the .latter forwardly off the plate.

I the periphery of the plate as it passes the latter, an arm intercepting the path of forward movement of a sheet of paper or envelop upon said plate, means as the gripper mechanism passes said plate to close thc jaws and cause them in such closing movement to first move said intercepting arm out of illepath o said en elop or sheet of paper and then close upon and draw the latter forwardlypll' the plate. and means: to return said arm to its original position after the envelop or sheet of paper has been wholly withdrawn from the plate.

4. in a printing press. a printiiig-platccarryin; roller suitably driven. an impression cylinder held yieldingly toward said plate and geared to said roller. :1. gripper mechanism carried by the cylinder and consisting of jaws hearing hinged relati n. an

envelop or sheet of paper sappo.vtin 1 plate contiguous to the cylinder, tin-ans to open said jaws. as'the cylinder 1(i\ul\'i'.; mean to project the gripper mechanism beyond the periphery of the plate as it passes the latter, an arm intercepting the path of forward niovcin'rnt of a sheet, oi paper or envelop upon said plate. means as the gripper mechanism passes said plate to close the jaws and cause them in such closing movement to first move said intercepting arm out of the path of Said envelop or sheet of paper and then close upon and draw the latter forwardly off the plate, means to return said arm to its original position after the envelop or sheet of paper has been wholly withdrawn from the plate, and means whereby the Cylinder is moved away from but not out of jrcar with said roller after the envelop or sheet of paper has received its impression .from said printing plate.

5. In a c linder printing press, the corn Lination o a printing roller, a cylinder geared to said roller, yielding means-holding the cylinder in the plane of movement of the printing surface of the roller, oscillatory arms supporting the cylinder, rock-arms piv- Otfllij carried by said cylinder-supporting; arms and held with their free ends pressed yieldingly therefrom, levers pivotally carricd by said rock-arms, means holding said levers inoperative with respect to the cylindcnsnpporting arms. means rotatable with the said roller for impartin; endwise move-- ment to -said levers toward the cylindersupporting arms, means to trip the means holding said levers insuid inoperative position, means to throw said levers to operative position after said holding means is tripped, and means to swinp said rock-arms toward the cylinder-supporting arms to cause said leversto swing the cylinder-snpporting arms and withdraw the cylinder from the plane of movement of the printing surface of said roller without throwing said roller and cylinder out of gear.

6. In a cylinder printing ress, the combinatiou o a printing rol er, a cylinder geared to said roller, yielding means holding,' the cylinder in the plane of movement of the printing surface of the roller, oscillatory arms supporting the cylinder, rock-arms pivotally carried by said cylinder-supportin arms and held with their free ends pressed yieldingly therefrom, levers pivotally car-- ried by said rock-arms, means holding said levrs inoperative with respect to the cylinder-supporting arms, means rotatable with the said roller for imparting endwise movement to said levers toward the cylindersupporting arms, means to trip the means holding said levers in said inoperative position, means to throv said levers to operative position after said holding means is tripped, means to swing said rock-arms toward the cylinder-supporting arms to cause said leveis to swing the cylinder-5npportintr arms and withdraw the cylinder from thrplane of movement of the printing surface of said roller without throwing said roller and cylinder out of gear, and means for restoring said levers t0 inoperative relation with respect to the c linder-supporting arms.

7. In a cylinder printing press, the combination of a printing roller, a cylinder geared to said roller, yielding means holding the cylinder in the plane of movement or the printing surface of the roller, oscillatory arms supporting the cylinder, rock-arms pivotally-carried by said cylinder-supporting arms and held with their free. ends pressed yleldingly therefrom, levers pivotally carried by said rock-arms, means holding said levers inoperative with respect to the cylinder-supporting arms, means rotatable with the said roller for imparting endwise movement to said levers toward the..cyl indersu orting arms, means to trip the means ho ding said levers in said inoperative position, means to throw said levers to operative position after said holding means is tripped, means to swing said rock-arms'toward the cylinder-supporting arms vers to swing the cylinder-supporting arms and withdraw the cylinder from the plane to cause said le-.

tin

of movement of the printing surface of said roller without throwing said roller and W1- inder out of gear, and cams rotatable with said roller for restoring said levers to inoperative relation with respect to the cylinder-supporting arms.

8. In a cylinder printing less, the c mbination of a printing roll: geared to said roller, yielding means holding the cylinder in the plane of movement of the printing surface of the roller, oscilarms and withdraw the cylinder latory arms supportin the cylinder, rockarms pivotally carried b said cylindersupporting arms and hel with their free ends pressed yieldingly therefrom, levers )ivota ly carried by said rock-arms, means holding said levers inoperative with respectto the cylinder-5n porting arms, means rotatable with the sai roller for imparting endwise movement to said levers toward the cylinder-supporting arms, means to trip the means holding said levers in said inoperative position, means to throw said levers to'operative position after said holdin means is tripped, means to swing said roc -arms toward the cylinder-su porting arms to cause said levers to swing t e cylinder-supporting mm the plane of movement of the printing surface. of said roller without throwing said roller and cylinder out of gear, means for restoring said levers to inoperative relation with respect; to the cylinder-supporting arms, and means to maintain the cylinder in inoperative relation with respect to the printing surface of said roller for a part of its revolution after said lever has been restored to .bination 0 its inoperative relation with respect to the cylinder-supporting arms.

9. 1m 21 c linder printing ress, the coma printing rollier, a cylinder cared to said roller, yielding means holdmg the cylinder in the plane of movement of the printing surface of the roller, oscillatory arms supporting the cylinder, rockarms pivotally carried by said cylindersupporting arms and held with their free ends pressed yieldingly therefrom, levers ivotally carried by said rock-arms, means holding said levers inoperative with respect to the cylinder-supporting arms, means rotatable with the said roller for imparting endwise movement to said levers toward the cylinder-su porting arms, means to trip the means hol ing said levers in said inoperative position, means; to throw said levers to operative position alter said holding means is trip ed, means to swing: said rock-arms tower the cylinder-supportEng arms to cause said levers to swing the cylinder-supportin arms and withdraw the cylinder from t 1e lane of movement of the printing surface 0 said roller without throwing said roller and cylinder out of gear, means to" restoring said levers t0 inoperative relation 1', a cylinder with res ect to the cylinder-supporting arms,.an means rotatable with said cylinder to maintain the same in inoperative relation with respect to the printing surfut'c bination of a printing roller, a cylinder geared to said roller, yielding means holding the cylimler in the plane of movement of the printing surface of the roller, oscillatory arms supporting the cylinder, rock-arms ivotally carried by said cylinder-supporting arms and held with their free ends pressed ieldingly therefrom, levers pivot;- ully carried by said rock-arms, means hold ing said levers inoperative with respect; to the cylinderrstipporting arms, means rotatable with the said roller for imparting endwise movement to said levers toward the cyliuder-su 'iporting arms, means to throw said levers to operative position after said holding means is tripped, means to swing said rock-arms toward the cylinder-supporting arms to cause said levers after being tripped to swing the cylinder-supporting arms and withdraw the cylinder from the plane of movement of the printing surface of said roller without throwing said roller and cylinder out of gear, means for restoring said levers to inoperative relation with respect to the cylinder supgan'ting arms, a circular flange rotatable with and concentric of the cylinder and provided with an opening, a hook-arm rigid with said holding means, and means for holding said hookarm pres ed against the inner side of said circular flange and for drawing said hookarm outwardly through said opening as the rotation of the cylinder disposes said opening opposite said hook-arm and for simultaneously tripping said holding means from engagement with said lever to permit the latter to return to operative relation with respect to the i': \-'linder-sup )orting arms.

-11. In a cylinder printingpress, the combination of a printing roller, a cylinder geared to said roller, yielding means holding: the cylinder in the plane of movement of the printing surface of the roller, o rillatory arms supporting the qvlinder, rock-arms pivotally carried by sa d cylunler-supportmg arms and held with their free ends l'il'(':: L-'l yieldinglv therefrom, levers pivot- :iilv carried by said rock-arms. means holding said levers inoperative with respect to the e -linder-sup;iorting arms, means rotatable \\llll the said lOlh-l for imparting endwiso movement to said levers toward the. \'llll\l\'l-5lll'lpol'llllg arms, means to throw Silltl levers to operative position after said holding means is tripped, means to swing said I'U'lIlC-tUIHZS toward the cylinder-support- 

